custom自己的webkit

 

android源码编绎完成后，。。。。。

 

简单的说一下我主要关注的webkit部分，源码在/home/peirenlei/work/gingerbread/external/webkit/下

单独编绎webkit部分的话，只需要进入到这个目录，mm就行，不过一般不会成功，因为他会信赖其它的一些库，所以最好是把全部源码编绎一次；

 

这个是android系统的webkit源码，如果想在它的基础上做一些修改，最好是把webkit目录重新复制一份，改个名，我的命名为olivewebcore,在该目录下修改相应的代码。修改完后最主要的是编绎了，如果只是简单的在这个目录下执行mm的话，百分之百会报错，那么我们需要做的就是对该目录下的android.mk文件做一下修改，最主要的是修改三个LOCAL_MODULE，最好不要与系统内的重名，然后最重要的是在最后一个include $(BUILD_SHARED_LIBRARY)前一行加入：

 

 

 

LOCAL_MODULE_TAGS = optional
LOCAL_PRELINK_MODULE := false

 include $(BUILD_SHARED_LIBRARY)

 

这个问题我是跟踪到build/core/base_rules.mk中

 

ifneq ($(filter $(LOCAL_MODULE_TAGS),user),)
  ifeq ($(filter $(GRANDFATHERED_USER_MODULES),$(LOCAL_MODULE)),)
    $(warning *** Module name: $(LOCAL_MODULE))
    $(warning *** Makefile location: $(LOCAL_PATH))
    $(warning * )
    $(warning * Each module must use a LOCAL_MODULE_TAGS in its)
    $(warning * Android.mk. Possible tags declared by a module:)
    $(warning * )
    $(warning *     optional, debug, eng, tests, samples)
    $(warning * )
    $(warning * If the module is expected to be in all builds)
    $(warning * of a product, then it should use the)
    $(warning * "optional" tag: )
    $(warning * )
    $(warning *    Add "LOCAL_MODULE_TAGS := optional" in the)
    $(warning *    Android.mk for the affected module, and add)
    $(warning *    the LOCAL_MODULE value for that component)
    $(warning *    into the PRODUCT_PACKAGES section of product)
    $(warning *    makefile(s) where it's necessary, if)
    $(warning *    appropriate.)
    $(warning * )
    $(warning * If the component should be in EVERY build of ALL)
    $(warning * products, then add its LOCAL_MODULE value to the)
    $(warning * PRODUCT_PACKAGES section of)
    $(warning * build/target/product/core.mk)
    $(warning * )
    $(error user tag detected on new module - user tags are only supported on legacy modules)
  endif
endif

 LOCAL_MODULE_TAGS不要设置为user,否则。。。。。

 

好了，mm吧，很顺利的完成编绎。

 

下一篇文章我将介绍webkit的移植工作，这个主要就是jni那一套的东东了；

 

附上我的Android.mk:

 

##
## Copyright 2009, The Android Open Source Project
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions
## are met:
##  * Redistributions of source code must retain the above copyright
##    notice, this list of conditions and the following disclaimer.
##  * Redistributions in binary form must reproduce the above copyright
##    notice, this list of conditions and the following disclaimer in the
##    documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
## EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
## EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
## PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
## PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
## OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
##

LOCAL_PATH := $(call my-dir)

# Two ways to control which JS engine is used:
# 1. use JS_ENGINE environment variable, value can be either 'jsc' or 'v8'
#    This is the preferred way.
# 2. if JS_ENGINE is not set, or is not 'jsc' or 'v8', this makefile picks
#    up a default engine to build.
#    To help setup buildbot, a new environment variable, USE_ALT_JS_ENGINE,
#    can be set to true, so that two builds can be different but without
#    specifying which JS engine to use.

# To enable JIT in Android's JSC, please set ENABLE_JSC_JIT environment
# variable to true.

# Read JS_ENGINE environment variable

JAVASCRIPT_ENGINE = $(JS_ENGINE)

# The default / alternative engine depends on the device class.
# On devices with a lot of memory (e.g. Passion/Sholes), the
# default is V8. On everything else, the only choice is JSC.
# TODO: use ARCH_ARM_HAVE_ARMV7 once that variable is added to
# the build system.
ifeq ($(ARCH_ARM_HAVE_VFP),true)
    DEFAULT_ENGINE = v8
    ALT_ENGINE = jsc
else
    DEFAULT_ENGINE = jsc
    ALT_ENGINE = jsc
endif

ifneq ($(JAVASCRIPT_ENGINE),jsc)
  ifneq ($(JAVASCRIPT_ENGINE),v8)
    # No JS engine is specified, pickup the one we want as default.
    ifeq ($(USE_ALT_JS_ENGINE),true)
      JAVASCRIPT_ENGINE = $(ALT_ENGINE)
    else
      JAVASCRIPT_ENGINE = $(DEFAULT_ENGINE)
    endif
  endif
endif

BASE_PATH := $(call my-dir)
include $(CLEAR_VARS)

# Define our module and find the intermediates directory
LOCAL_MODULE := libolivewebcore
LOCAL_MODULE_CLASS := STATIC_LIBRARIES
base_intermediates := $(call local-intermediates-dir)

# Using := here prevents recursive expansion
WEBKIT_SRC_FILES :=

# We have to use bison 2.3
include $(BASE_PATH)/bison_check.mk

# Build our list of include paths. We include WebKit/android/icu first so that
# any files that include <unicode/ucnv.h> will include our ucnv.h first. We
# also add external/ as an include directory so that we can specify the real
# icu header directory as a more exact reference to avoid including our ucnv.h.
#
# Note that JavasCriptCore/ must be included after WebCore/, so that we pick up
# the right config.h.
LOCAL_C_INCLUDES := \
	$(JNI_H_INCLUDE) \
	$(LOCAL_PATH)/WebKit/android/icu \
	external/ \
	external/icu4c/common \
	external/icu4c/i18n \
	external/libxml2/include \
	external/skia/emoji \
	external/skia/include/core \
	external/skia/include/effects \
	external/skia/include/images \
	external/skia/include/ports \
	external/skia/include/utils \
	external/skia/src/ports \
	external/sqlite/dist \
	frameworks/base/core/jni/android/graphics

LOCAL_C_INCLUDES := $(LOCAL_C_INCLUDES) \
	$(LOCAL_PATH)/WebCore \
	$(LOCAL_PATH)/WebCore/accessibility \
	$(LOCAL_PATH)/WebCore/bindings/generic \
	$(LOCAL_PATH)/WebCore/css \
	$(LOCAL_PATH)/WebCore/dom \
	$(LOCAL_PATH)/WebCore/editing \
	$(LOCAL_PATH)/WebCore/history \
	$(LOCAL_PATH)/WebCore/history/android \
	$(LOCAL_PATH)/WebCore/html \
	$(LOCAL_PATH)/WebCore/html/canvas \
	$(LOCAL_PATH)/WebCore/inspector \
	$(LOCAL_PATH)/WebCore/loader \
	$(LOCAL_PATH)/WebCore/loader/appcache \
	$(LOCAL_PATH)/WebCore/loader/icon \
	$(LOCAL_PATH)/WebCore/notifications \
	$(LOCAL_PATH)/WebCore/page \
	$(LOCAL_PATH)/WebCore/page/android \
	$(LOCAL_PATH)/WebCore/page/animation \
	$(LOCAL_PATH)/WebCore/platform \
	$(LOCAL_PATH)/WebCore/platform/android \
	$(LOCAL_PATH)/WebCore/platform/animation \
	$(LOCAL_PATH)/WebCore/platform/graphics \
	$(LOCAL_PATH)/WebCore/platform/graphics/android \
	$(LOCAL_PATH)/WebCore/platform/graphics/filters \
	$(LOCAL_PATH)/WebCore/platform/graphics/network \
	$(LOCAL_PATH)/WebCore/platform/graphics/skia \
	$(LOCAL_PATH)/WebCore/platform/graphics/transforms \
	$(LOCAL_PATH)/WebCore/platform/image-decoders \
	$(LOCAL_PATH)/WebCore/platform/image-decoders/bmp \
	$(LOCAL_PATH)/WebCore/platform/image-decoders/gif \
	$(LOCAL_PATH)/WebCore/platform/image-decoders/ico \
	$(LOCAL_PATH)/WebCore/platform/image-decoders/jpeg \
	$(LOCAL_PATH)/WebCore/platform/image-decoders/png \
	$(LOCAL_PATH)/WebCore/platform/mock \
	$(LOCAL_PATH)/WebCore/platform/network \
	$(LOCAL_PATH)/WebCore/platform/network/android \
	$(LOCAL_PATH)/WebCore/platform/sql \
	$(LOCAL_PATH)/WebCore/platform/text \
	$(LOCAL_PATH)/WebCore/plugins \
	$(LOCAL_PATH)/WebCore/plugins/android \
	$(LOCAL_PATH)/WebCore/rendering \
	$(LOCAL_PATH)/WebCore/rendering/style \
	$(LOCAL_PATH)/WebCore/storage \
	$(LOCAL_PATH)/WebCore/svg \
	$(LOCAL_PATH)/WebCore/svg/animation \
	$(LOCAL_PATH)/WebCore/svg/graphics \
	$(LOCAL_PATH)/WebCore/svg/graphics/filters \
	$(LOCAL_PATH)/WebCore/websockets \
	$(LOCAL_PATH)/WebCore/workers \
	$(LOCAL_PATH)/WebCore/xml

LOCAL_C_INCLUDES := $(LOCAL_C_INCLUDES) \
	$(LOCAL_PATH)/WebKit/android \
	$(LOCAL_PATH)/WebKit/android/WebCoreSupport \
	$(LOCAL_PATH)/WebKit/android/jni \
	$(LOCAL_PATH)/WebKit/android/nav \
	$(LOCAL_PATH)/WebKit/android/plugins

LOCAL_C_INCLUDES := $(LOCAL_C_INCLUDES) \
	$(LOCAL_PATH)/JavaScriptCore \
	$(LOCAL_PATH)/JavaScriptCore/wtf \
	$(LOCAL_PATH)/JavaScriptCore/wtf/unicode \
	$(LOCAL_PATH)/JavaScriptCore/wtf/unicode/icu

LOCAL_C_INCLUDES := $(LOCAL_C_INCLUDES) \
	$(base_intermediates)/WebCore/ \
	$(base_intermediates)/WebCore/css \
	$(base_intermediates)/WebCore/html \
	$(base_intermediates)/WebCore/platform

ifeq ($(JAVASCRIPT_ENGINE),v8)
# Include WTF source file.
d := JavaScriptCore
LOCAL_PATH := $(BASE_PATH)/$d
intermediates := $(base_intermediates)/$d
include $(LOCAL_PATH)/Android.v8.wtf.mk
WEBKIT_SRC_FILES += $(addprefix $d/,$(LOCAL_SRC_FILES))
endif  # JAVASCRIPT_ENGINE == v8

# Include source files for WebCore
d := WebCore
LOCAL_PATH := $(BASE_PATH)/$d
JAVASCRIPTCORE_PATH := $(BASE_PATH)/JavaScriptCore
intermediates := $(base_intermediates)/$d
include $(LOCAL_PATH)/Android.mk
ifeq ($(JAVASCRIPT_ENGINE),jsc)
include $(LOCAL_PATH)/Android.jscbindings.mk
endif
ifeq ($(JAVASCRIPT_ENGINE),v8)
include $(LOCAL_PATH)/Android.v8bindings.mk
endif
WEBKIT_SRC_FILES += $(addprefix $d/,$(LOCAL_SRC_FILES))
LOCAL_C_INCLUDES += $(BINDING_C_INCLUDES)

# Include the derived source files for WebCore. Uses the same path as
# WebCore
include $(LOCAL_PATH)/Android.derived.mk
ifeq ($(JAVASCRIPT_ENGINE),jsc)
include $(LOCAL_PATH)/Android.derived.jscbindings.mk
endif
ifeq ($(JAVASCRIPT_ENGINE),v8)
include $(LOCAL_PATH)/Android.derived.v8bindings.mk
endif

# Include source files for android WebKit port
d := WebKit
LOCAL_PATH := $(BASE_PATH)/$d
intermediates := $(base_intermediates)/$d
include $(LOCAL_PATH)/Android.mk
WEBKIT_SRC_FILES += $(addprefix $d/,$(LOCAL_SRC_FILES))

# Redefine LOCAL_PATH here so the build system is not confused
LOCAL_PATH := $(BASE_PATH)

# Define our compiler flags
LOCAL_CFLAGS += -Wno-endif-labels -Wno-import -Wno-format
LOCAL_CFLAGS += -fno-strict-aliasing
LOCAL_CFLAGS += -include "WebCorePrefix.h"
LOCAL_CFLAGS += -fvisibility=hidden

# Enable JSC JIT if JSC is used and ENABLE_JSC_JIT environment
# variable is set to true
ifeq ($(JAVASCRIPT_ENGINE),jsc)
ifeq ($(ENABLE_JSC_JIT),true)
LOCAL_CFLAGS += -DENABLE_ANDROID_JSC_JIT=1
endif
endif

ifeq ($(TARGET_ARCH),arm)
LOCAL_CFLAGS += -Darm
# remove this warning: "note: the mangling of 'va_list' has changed in GCC 4.4"
LOCAL_CFLAGS += -Wno-psabi
endif

# need a flag to tell the C side when we're on devices with large memory
# budgets (i.e. larger than the low-end devices that initially shipped)
ifeq ($(ARCH_ARM_HAVE_VFP),true)
LOCAL_CFLAGS += -DANDROID_LARGE_MEMORY_DEVICE
endif

ifeq ($(ENABLE_SVG),true)
LOCAL_CFLAGS += -DENABLE_SVG=1
endif

ifeq ($(ENABLE_WTF_USE_ACCELERATED_COMPOSITING),false)
LOCAL_CFLAGS += -DWTF_USE_ACCELERATED_COMPOSITING=0
endif

ifeq ($(ENABLE_WTF_USE_ACCELERATED_COMPOSITING),true)
LOCAL_CFLAGS += -DWTF_USE_ACCELERATED_COMPOSITING=1
endif

# Temporary disable SVG_ANIMATION.
ifeq ($(ENABLE_SVG_ANIMATION),true)
LOCAL_CFLAGS += -DENABLE_SVG_ANIMATION=1
endif

ifeq ($(WEBCORE_INSTRUMENTATION),true)
LOCAL_CFLAGS += -DANDROID_INSTRUMENT
endif

# LOCAL_LDLIBS is used in simulator builds only and simulator builds are only
# valid on Linux
LOCAL_LDLIBS += -lpthread -ldl

# Build the list of shared libraries
LOCAL_SHARED_LIBRARIES := \
	libandroid_runtime \
	libnativehelper \
	libsqlite \
	libskia \
	libutils \
	libui \
	libcutils \
	libicuuc \
	libicui18n \
	libmedia \
	libsurfaceflinger_client

ifeq ($(WEBCORE_INSTRUMENTATION),true)
LOCAL_SHARED_LIBRARIES += libhardware_legacy
endif

# We have to use the android version of libdl when we are not on the simulator
ifneq ($(TARGET_SIMULATOR),true)
LOCAL_SHARED_LIBRARIES += libdl libstlport
include external/stlport/libstlport.mk
endif

# Build the list of static libraries
LOCAL_STATIC_LIBRARIES := libxml2
ifeq ($(JAVASCRIPT_ENGINE),v8)
LOCAL_STATIC_LIBRARIES += libv8
endif

# Redefine LOCAL_SRC_FILES to be all the WebKit source files
LOCAL_SRC_FILES := $(WEBKIT_SRC_FILES)

# Define this for use in other makefiles.
WEBKIT_C_INCLUDES := $(LOCAL_C_INCLUDES)
WEBKIT_CFLAGS := $(LOCAL_CFLAGS)
WEBKIT_GENERATED_SOURCES := $(LOCAL_GENERATED_SOURCES)
WEBKIT_LDLIBS := $(LOCAL_LDLIBS)
WEBKIT_SHARED_LIBRARIES := $(LOCAL_SHARED_LIBRARIES)
WEBKIT_STATIC_LIBRARIES := $(LOCAL_STATIC_LIBRARIES)

# Build the library all at once
include $(BUILD_STATIC_LIBRARY)

ifeq ($(JAVASCRIPT_ENGINE),jsc)
# Now build libjs as a static library.
include $(CLEAR_VARS)
LOCAL_MODULE := libjs
LOCAL_LDLIBS := $(WEBKIT_LDLIBS)
LOCAL_SHARED_LIBRARIES := $(WEBKIT_SHARED_LIBRARIES)
LOCAL_STATIC_LIBRARIES := $(WEBKIT_STATIC_LIBRARIES)
LOCAL_CFLAGS := $(WEBKIT_CFLAGS)
# Include source files for JavaScriptCore
d := JavaScriptCore
LOCAL_PATH := $(BASE_PATH)/$d
LOCAL_MODULE_CLASS := STATIC_LIBRARIES
# Cannot use base_intermediates as this is a new module
intermediates := $(call local-intermediates-dir)
include $(LOCAL_PATH)/Android.mk
# Redefine LOCAL_SRC_FILES with the correct prefix
LOCAL_SRC_FILES := $(addprefix $d/,$(LOCAL_SRC_FILES))
# Use the base path to resolve file names
LOCAL_PATH := $(BASE_PATH)
# Append jsc intermediate include paths to the WebKit include list.
LOCAL_C_INCLUDES := $(WEBKIT_C_INCLUDES) \
	$(intermediates) \
	$(intermediates)/parser \
	$(intermediates)/runtime \
# Build libjs
include $(BUILD_STATIC_LIBRARY)
endif  # JAVASCRIPT_ENGINE == jsc

# Now build the shared library using only the exported jni entry point. This
# will strip out any unused code from the entry point.
include $(CLEAR_VARS)
# if you need to make webcore huge (for debugging), enable this line
#LOCAL_PRELINK_MODULE := false
LOCAL_MODULE := libolivewebcore
LOCAL_LDLIBS := $(WEBKIT_LDLIBS)
LOCAL_SHARED_LIBRARIES := $(WEBKIT_SHARED_LIBRARIES)
LOCAL_STATIC_LIBRARIES := libolivewebcore $(WEBKIT_STATIC_LIBRARIES)
ifeq ($(JAVASCRIPT_ENGINE),jsc)
LOCAL_STATIC_LIBRARIES += libjs
endif
LOCAL_LDFLAGS := -fvisibility=hidden
LOCAL_CFLAGS := $(WEBKIT_CFLAGS)
LOCAL_C_INCLUDES := $(WEBKIT_C_INCLUDES)
LOCAL_PATH := $(BASE_PATH)
LOCAL_SRC_FILES := \
	WebKit/android/jni/WebCoreJniOnLoad.cpp
# Do this dependency by hand. The reason we have to do this is because the
# headers that this file pulls in are generated during the build of webcore.
# We make all of our object files depend on those files so that they are built
# before we try to compile the file.
LOCAL_ADDITIONAL_DEPENDENCIES := $(filter %.h, $(WEBKIT_GENERATED_SOURCES))

LOCAL_MODULE_TAGS = optional
LOCAL_PRELINK_MODULE := false
include $(BUILD_SHARED_LIBRARY)

# Build the wds client
include $(BASE_PATH)/WebKit/android/wds/client/Android.mk

# Build the performance command line tool.
include $(BASE_PATH)/WebKit/android/benchmark/Android.mk

# Build the webkit merge tool.
include $(BASE_PATH)/WebKitTools/android/webkitmerge/Android.mk